Clutch for transom-rods.



, N. G. PILGHER.

CLUTCH FOR TRANSOM RODS.

APPLICATION FILED IBB.18, 1909 935,545, Patented Sept28, 1909.

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UNITED STATES ENT UFFIQIZ.

NORMAN GEORGE PILCHER, OF SYDNEY, NEW SOUTH WALES, AUSTRALIA.

CLUTCH FOR TRANSOM-RODS.

To all whom it may concern:

Be it known that I, NORMAN GEORGE PIL- CHER, a subject of the King 01":Great Britain, residing at 7 9 Macleay street, Sydney, in the State ofNew South lVales, Commonwealth of Australia, bairister-at law, haveinvented Improvements in Clutches for Transom- Itods, of which thefollowing is a specification.

The present invention relates to improvements in clutches for transomrods, and it has for its prime object the production of an apparatus ofthe general type specified, constructed in such a manner as to admit ofits being operated with extreme case, both to lock and to release thetransom.

The drawings illustrate the invention as applied to a transom andcomprise ;-Figure 1 a side elevation of a transom in the act of beingopened with the improvements attached. Fig. 2 an enlarged longitudinalvertical section through the clutch box, and Fig. 3 a similar view ofsaid clutch box illus trating a modification in the construction.

According to this invention in its simplest form a hollow clutch box 1open on its underside is connected to a bracket 2 on the sash by a pivot3, and within said box is positioned a clutch plate 4, which projects atits upper end through a slot 5 in said box the lower end of the plateextending below the bottom thereof and being connected with one end 6 ofa cord. A rod 7 having a stop 8 at its outer end passes freely throughholes 9, 9, in the ends of said box and freely but not loosely through ahole 10 in the clutch plate and its inner end is pivotally connected orhinged as at 11 to a bracket 12 secured on the casing 13 of the transom.The hinged rod 7 is in the same plane as the pivot 3 upon which theclutch box 1 is mounted. The rod has a spiral springl coiled around itbetween the outer end of the box and the clutch plate, which normallycauses said plate to be inclined so that the edge of its hole 10 bitesor grips the rod and prevents the box sliding on the latter. Stops 15are provided on the inner sides of the box to prevent the plate beingpulled by the cord past a position approximately perpendicular to therod. The other end 16 of the cord used for closing the transom isattached to the inner end of the box and passes over a sheave 17 on thebracket 12. It will'be obvious that instead of a single cord twoseparate ones may be Specification of Letters Patent.

Application filed February 18, 1909.

Patented Sept. 28, 1909.

Serial No. 478,563.

employed attached respectively to the plate and box.

It is necessary in using this apparatus that it be fixed wholly abovethe hinge of the transom, and that the rod lies approximately at anangle of 30 in a vertical plane to the casing of the transom when thelatter is shut, and it is applicable in the manner above described onlyto transoms whose axis of revolution in moving is horizontal. In itsapplication however to transoms whose axis of revolution in moving isvertical, the apparatus should be so afiixed that when the transom isshut the rod should lie at an angle of 30 measured from the wall in ahorizontal plane.

In operation when it is desired to open the transom the end 6 of thecord is pulled causing the plate 1 against the pressure of its spring14:, to assume a position approximately perpendicular to the rod 7 as inFig. 1, whereupon the grip of the plate is re leased and the clutch box1 is freeto slide outwardly and downwardly along the rod aided by thecontinued pull of the cord or the weight of the transom.

The transom is fixed in any position by releasing the tension of thecord when the spring 14 will cause the plate to become inclined againand immediately grip the rod, and the transom may be closed by pullingthe other end 16 of the cord or by pushing it back by hand.

If preferred an additional plate 45, Flg. 3 may be employed in the boxin which case both plates 1 and 4t are normally pressed toward eachother by the springs 14 and 14, and the end 16 of the cord is attachedto the additional plate P instead of to the box. lVith this constructionwhen the plate 4% is pulled by the end 6 of the cord it releases theclutch box, which slides down the rod freely as the other plate 1 ofiersno resistance to the box moving outwardly and when the cord is slackenedbot-h plates grip the rod. The reverse movement is achieved by pullingthe end 16 of the cord which first releases the grip of the plate andthen closes the transom.

Having now particularly described and ascertained the nature of my saidinvention and in what manner the same is to be performed, I declare thatwhat I claim is 1. In a clutch for transom rods, the combination of acasing connected with the transom and engaged with the rod, said casingbeing arranged for movement wit-h respect to the latter and to saidtransom; a clutch member carried by the casing and yieldingly engagedwith said rod; and means for releasing said member from such engagement.7

2. In a clutch for transom rods, the combination of a rocking casingconnected with the transom and arranged for movement upon the rod; ashiftable clutch member carried by the casing and yieldingly engagedwith said rod; and means for releasing said member from such engagement.

3. In a clutch for transom rods, the combination of a casing slidablymounted upon the rod and pivotally connected with the transom; a clutchmember disposed within the casing and formed with a perforation throughwhich said rod extends; means for normally holding said member inposition to engage said rod with one edge of its perforation; and meansfor releasing said member from such engagement.

4:. In a clutch for transom rods, the combination of a rocking casingconnected with the transom and arranged for movement upon the rod; ashiftable clutch member carried by the casing and yieldingly engagedwith said rod; means for shifting said member to release the same fromsuch engagement; and means for limiting such movement.

5. In-a clutch for transom rods, the combination of a casing connectedwith the transom and arranged for movement upon the rod; a plurality ofclutch members carried by the casing and yieldingly engaged with therod; and means connected with said members for independently releasingthe same from such engagement.

In testimony whereof I have hereunto set my hand in presence of twosubscribing witnesses.

NORMAN GEORGE PILOHER.

Witnesses:

CHARLES EDWARD GRAHAM, HENRY WA'ronoRNn CLARKE.

